public async Task<bool> SaveDataSettingAsync(User user)
        {
            var result = this.jsonSerializer.Serialize(user);

            if (result == null)
            {
                return false;
            }

            return await this.SaveFileAsync(StorageFolder.MyFolder, StorageFile.DataSettings, FileType.json, result).ConfigureAwait(false);
        }
        private async Task StoreContentAsync()
        {
            var user = new User { Name = this.Name, Age = int.Parse(this.Age) };

            var result = await this.storageService.SaveDataSettingAsync(user).ConfigureAwait(false);

            if (!result)
            {
                //this.messageBoxService.ShowMessageAsync()
            }
        }